Impact of nanografting on the local structure of ternary self-assembled monolayers

Prior studies using single and binary adsorbates indicate that nanografting impacts the reaction pathways and local structure of self-assembled monolayers （SAMs）. This work explores the influence of nanografting in the case of ternary SAMs. Using atomic force microscopy （AFM） as both a nanografting...

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Bibliographic Details
Published in:Nano research 2015-06, Vol.8 (6), p.2102-2114
Main Authors: Bu, Donglei, Riechers, Shawn, Liang, Jian, Liu, Gang-yu
Format: Article
Language:English
Subjects:
Atomic force microscopy
Atomic structure
Atomic/Molecular Structure and Spectra
Biomedicine
Biotechnology
Chemistry and Materials Science
Condensed Matter Physics
Exchange
Materials Science
Microscopy
Nanostructure
Nanotechnology
Pathways
Research Article
SAMs
Self assembly
Self-assembled monolayers
三元体系
原子力显微镜
地对空导弹
局部结构
移植
纳米
自组装膜
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Summary:Prior studies using single and binary adsorbates indicate that nanografting impacts the reaction pathways and local structure of self-assembled monolayers （SAMs）. This work explores the influence of nanografting in the case of ternary SAMs. Using atomic force microscopy （AFM） as both a nanografting and imaging tool, the local structures of two ternary SAMs, SC14：SSC10CHO：SC2COOH and SC18：SSC10CHO：SC2COOH, formed under natural growth and nanografting were imaged and compared. The results indicate that nanografting impacts the degree of phase segregation and the domain height in ternary SAMs. In addition to the previously known effect of altering self-assembly pathways, this study reveals an additional impact for these ternary systems： By shaving over the previous trajectory （grafted region）, nanografting could start exchange reactions and lateral movement of surface-bound thiols, which leads to new and somewhat unanticipated local structures.
ISSN:1998-0124
1998-0000
DOI:10.1007/s12274-015-0721-2